I had noticed this too. It seems that the 'good old boys' i.e PA-28's, C150/2 etc are going for silly money even with good amounts of kit.
I had toyed with the idea of buying a C152 but TBH, with all things considered I have decided to build a Vans RV7. As much as I dearly love the Cessna's theres just no comparison in terms of performance, technology etc.
Obviously theres the issue of CofA Vs Permit but I can live with the restrictions.
Now, only if those twins would drop drastically in price
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Spamcan